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One gully on a crater wall that was imaged in 2001 was found to have filled with light-coloured material when it was re-imaged in 2005. A similar new light-coloured deposit appears in a 2004 image of crater gullies previously imaged in 1999.

The researchers suggest the deposits were made by liquid water flowing out from beneath the surface. The researchers estimate that each flow would have involved 5 to 10 swimming pools' worth of water.

It would have been similar to a flash flood in the desert, says team member Ken Edgett of Malin Space Science Systems. "If you were there and this thing was coming down the slope, you'd probably want to get out of the way," he says.

2014 is going to be a good year. More content, more streamlining. Be a part of history!

Sounds interesting, although it's important to remember that at the current moment it's just a guess on the part of the researchers, and more corroboration is needed before anything can be said with reasonable certainty.

Let's not forget that, even in high Summer, the surface temperatures of Mars do not allow for liquid water to flow. It is thought that this water, if present, could be in its liquid form below the surface, but there is so far no evidence.

However, if Mars does have liquid water somewhere, then the chances that life might also be present are fairly high. No little green men, but rather some primitive prokaryotes.